Item

Standard

Analysis data

Appearance

White crystalline powder

conforms

Chloride (Cl)

Not more than 0.5%

<0.5%   

Iron (Fe)

Not more than 0.003%

<0.003%

Loss on drying

Not more than 0.50%

0.2%

Residue on ignition(sulfated)

Not more than 0.10%

0.08%

Assay

98.0% to 101.0%

98.8%

pH

5.5 to 7.0

6.1

Conclusion

Product is according with standard.